Tow width-limiting adjusting device of fiber opening gluing machine

Abstract

The utility model discloses a tow width-limiting adjusting device of a fiber opening and gluing machine, which is arranged on a body of a third-stage air opener of the fiber opening and gluing machine and positioned between a cover plate of the third-stage air opener and a protective cover of the fiber opening and gluing machine. The tow width-limiting adjusting device comprises a double-end lead screw rotationally arranged on a body of the fiber opening and gluing machine and width-limiting check blocks arranged at the two ends of the double-end lead screw respectively. The two width limiting check blocks are symmetrically arranged relative to the third-stage air opener and move relative to the third-stage air opener without rotating; a driving part is arranged at one end of the double-end lead screw, and the screwing directions of threads at the two ends of the double-end lead screw are opposite. The two width limiting check blocks are driven to move through the double-end lead screws with the opposite rotating directions at the two ends, the centering performance of adjustment is ensured, and the adjustment difficulty and the work intensity are greatly reduced.

Description

Technical Field

[0001] This application relates to the technical field of filter rod production, and more specifically, to a device for adjusting the width limit of a tow in a fiber opening and sizing machine. Background Art

[0002] The functions of a fiber opening and sizing machine are to unwind a tow tape, eliminate curl, apply a plasticizer, and recombine. As Figure 1 shown, a first-stage air opener 1, a second-stage air opener 2, and a third-stage air opener 3 are sequentially arranged along the traveling direction of the tow on the fiber opening and sizing machine. The tow tape passes through the three air openers and is gradually blown loose, dispersed, and evenly unwound. Through the action of the tow dispersion device, the tow can obtain a certain spreading width, and the quality of the tow stretching directly affects the effect of subsequent plasticizer application. Due to factors such as mechanical vibration and the guiding of the opening thread roller during the transmission of the tow tape, the tow tape will swing laterally, and the unstable operation of the tow tape is directly related to the stability of the filter rod draw resistance. Therefore, a pair of width limit blocks for spreading the tow are provided on the third-stage air opener 3. During the production process, the distance between the width limit blocks can be set according to different processing technology requirements, tow characteristic curves, etc. to control the width of the tow.

[0003] If the distance between the width limit blocks is too narrow, the blocks will interfere with the progress of the tow, generate resistance, and even cause the tow to break due to excessive tension. If the distance between the width limit blocks is too wide, the tow tape cannot be stabilized, and the tow tape will swing laterally during operation, resulting in a situation where one side of the block approaches the tow while the other side drifts, and the tow swings greatly back and forth in the third-stage air opener. Therefore, both too narrow and too wide situations affect the stability of the tow draw resistance, and the standard deviation far exceeds the process requirements.

[0004] As can be seen from the above, during the actual production process, the distance between the width limit blocks is an important parameter for controlling the stability of indicators such as the draw resistance and hardness of the filter rod. When changing the tow specifications or when the draw resistance and hardness fluctuate greatly, it is necessary to check and adjust the distance between the width limit blocks.

[0005] During the production process, since the protective cover 11 is in a locked state, the distance between the width limit blocks cannot be adjusted. Each adjustment requires the machine to be stopped. After the protective cover 11 is unlocked and opened, the knurled nut for limiting the width limit block is loosened before the position of the width limit block can be adjusted. Since the width limit block is an independently movable part, during the adjustment process, tools such as a steel ruler are needed to ensure that the centers of a pair of width limit blocks are symmetric and the width is appropriate. After the adjustment is completed, it is also necessary to verify by starting the machine. If the process standard is not met, rework is required according to the above steps, and it cannot be adjusted in place at one time, which is time-consuming and laborious. Utility Model Content

[0006] The present application provides a filament width limiting and adjusting device for a fiber opening and sizing machine. By driving two width limiting blocks to move with a double-headed lead screw with opposite helix directions at both ends, the centering of adjustment is ensured, greatly reducing the adjustment difficulty and working intensity.

[0007] The present application provides a filament width limiting and adjusting device for a fiber opening and sizing machine, which is arranged on the body of the third-stage air opener of the fiber opening and sizing machine and is located between the cover plate of the third-stage air opener and the protective housing of the fiber opening and sizing machine;

[0008] The filament width limiting and adjusting device includes a double-headed lead screw rotatably arranged on the body of the fiber opening and sizing machine and width limiting blocks respectively arranged at both ends of the double-headed lead screw;

[0009] The two width limiting blocks are symmetrically arranged relative to the third-stage air opener and move relative to the third-stage air opener without rotation; a driving component is arranged at one end of the double-headed lead screw, and the thread helix directions at both ends of the double-headed lead screw are opposite.

[0010] Preferably, the filament width limiting and adjusting device further includes a guide rail parallel to the double-headed lead screw, and the two width limiting blocks are respectively slidably connected to the guide rail.

[0011] Preferably, the driving component is a motor, and the motor is connected to the end of the double-headed lead screw through a coupling.

[0012] Preferably, the filament width limiting and adjusting device further includes a spread width detection component, and the spread width detection component is arranged above the double-headed lead screw.

[0013] Preferably, the spread width detection component is a grating ruler.

[0014] Preferably, the spread width detection component is a vision detection assembly.

[0015] Preferably, the vision detection assembly includes an upper computer and a camera arranged above the double-headed lead screw, and the camera is signal-connected to the upper computer.

[0016] Preferably, the upper computer is signal-connected to the actuator of the driving component.

[0017] The present application further provides a filament width limiting and adjusting method for a fiber opening and sizing machine, including:

[0018] Detecting the first distance between the two width limiting blocks;

[0019] Judging whether the first distance meets the process requirements through data analysis;

[0020] If not, start the driving component to adjust the distance between the two width limiting blocks.

[0021] Preferably, adjusting the distance between the two width limit blocks specifically includes:

[0022] Detecting the second distance between the two width limit blocks in real time through a width expansion detection member;

[0023] If the second distance is not equal to the target distance, controlling the driving member to continue running until the second distance is equal to the target distance.

[0024] Through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings, other features and advantages of the present application will become clear. Description of the Drawings

[0025] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present application and, together with the description, are used to explain the principles of the present application.

[0026] Figure 1 It is a structural diagram of a fiber opening and sizing machine;

[0027] Figure 2 It is a structural diagram of the tow width limit adjusting device provided by the present application. Detailed Embodiments

[0028] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present application, its application, or its use.

[0030] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0031] In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values.

[0032] The present application provides a device and method for adjusting the width limit of a tow in a fiber opening and sizing machine. By driving two width limit blocks to move with a double-headed lead screw with opposite helix directions at both ends, the centering during adjustment is ensured, greatly reducing the difficulty and working intensity of adjusting the width limit of the tow. In addition, a spread width detection component is arranged above the double-headed lead screw to detect the distance between the two width limit blocks, realizing the monitoring function. The adjustment can be carried out without opening the protective cover of the device, improving the adjustment efficiency. In addition, the spread width detection component is a visual detection component, and the automatic adjustment of the width limit of the tow is realized through the control of the actuator of the driving component by the upper computer, improving the adjustment accuracy and enabling the adjustment to be completed at one time.

[0033] Combined with Figure 1 and 2 As shown, the device for adjusting the width limit of the tow in the fiber opening and sizing machine provided by the present application is arranged on the body of the third-stage air opener 3 of the fiber opening and sizing machine and is located between the cover plate 10 of the third-stage air opener 3 and the protective cover 11 of the fiber opening and sizing machine. Figure 2 In the example of

[0034] As Figure 2 shown, the device for adjusting the width limit of the tow includes a double-headed lead screw 7 rotatably arranged on the body of the fiber opening and sizing machine and width limit blocks 5 respectively arranged at both ends of the double-headed lead screw.

[0035] The two width limit blocks 5 are symmetrically arranged with respect to the third-stage air opener 3 and move relative to the third-stage air opener 3 without rotation. A driving component is arranged at one end of the double-headed lead screw 7, and the thread helix directions at both ends of the double-headed lead screw 7 are opposite.

[0036] As Figure 2 shown, the tow band enters the gap between the cover plate 10 and the body of the third-stage air opener 3 from the right side of the cover plate 10. The gap on the body is a strip-shaped hole, and gas is blown from the pipeline below the body to the strip-shaped hole. The tow band is blown and dispersed under the action of the air flow, and then the tow band passes through below the double-headed lead screw 7 and between the two width limit blocks 5.

[0037] After the driving component is started to generate power and drive the double-headed lead screw 7 to rotate, since the thread profile angle, pitch and other parameters at both ends of the double-headed lead screw 7 are the same and the helix directions are opposite, during the rotation process, the two width limit blocks 5 generate horizontal linear movements with the same speed and opposite directions under the action of the double-headed lead screw, so as to adjust the distance between the two width limit blocks 5 while ensuring centering.

[0038] As an embodiment, the driving component is a motor 8, and the motor 8 is connected to the end of the double-headed lead screw 7 through a coupling 9.

[0039] As an embodiment, the double-headed lead screw 7 is a ball screw, which has a high adjustment accuracy.

[0040] Preferably, the tow width adjustment device further includes a guide rail 6 parallel to the double-headed lead screw 7, which is fixed to the body of the third-stage air opener 3 through a rail bracket 12. The two width-limiting blocks 5 are respectively slidably connected to the guide rail 6 to prevent the width-limiting blocks from rotating axially, avoiding faults such as thread jamming caused by the skewing of the width-limiting blocks, and making the movement of the width-limiting blocks smoother.

[0041] On the above basis, the tow width adjustment device further includes a spread width detection member, which is arranged above the double-headed lead screw 7 and is used to detect the distance between the two width-limiting blocks 5 to monitor the spread width of the tow belt.

[0042] As an embodiment, as Figure 2 shown, the spread width detection member is a grating scale 4, which is higher than the protective cover 11, and the staff can directly read the measurement data of the grating scale 4 without removing the protective cover 11 to monitor the spread width.

[0043] As another embodiment, the spread width detection member is a vision detection component.

[0044] As an embodiment, the vision detection component includes a host computer and a camera arranged above the double-headed lead screw 7. The camera is signal-connected to the host computer. The camera is used to collect images or videos of the double-headed lead screw 7 and the two width-limiting blocks 5 and transmit them to the host computer. The host computer detects the distance between the two width-limiting blocks 5 through image processing technology to realize the monitoring of the spread width.

[0045] Preferably, the host computer is signal-connected to the actuator of the driving component. The host computer is used to control the forward or reverse rotation of the actuator according to the distance between the two width-limiting blocks 5 to automatically adjust the spread width, improve the adjustment accuracy, and can achieve one-time adjustment without repeatedly turning on the machine for verification, thereby improving the adjustment efficiency.

[0046] Preferably, the vision detection component is also used to detect the jitter condition of the tow in addition to detecting the distance between the two width-limiting blocks. While the camera collects images of the double-headed lead screw 7 and the width-limiting blocks 5, it also collects the movement condition of the tow belt passing through the third-stage air opener 3. The host computer analyzes the jitter condition of the tow belt through images. If the jitter is abnormal, the host computer issues an alarm message.

[0047] Due to operation in a high-dust environment, preferably, the double-headed lead screw, guide rail, width-limiting blocks, and the outside of the driving component are sealed to improve the service life of the device.

[0048] Based on the above, the present application further provides a method for adjusting the width limit of a tow in a fiber opening and sizing machine, including:

[0049] P1: Detect the first distance between two width limit blocks.

[0050] Specifically, the above-mentioned web width detection component (ruler grating or vision detection component) can be used to detect the first distance.

[0051] P2: Judge whether the first distance meets the process requirements through data analysis.

[0052] Specifically, data related to the filter rod draw resistance can be collected within a preset time period to form a data set, and this data set can be analyzed to judge whether the first distance meets the process requirements (such as whether the filter rod draw resistance is qualified).

[0053] P3: If the first distance does not meet the process requirements, start the driving component to adjust the distance between the two width limit blocks.

[0054] As an embodiment, adjusting the distance between the two width limit blocks (P3) specifically includes:

[0055] P31: Real-time detect the second distance between the two width limit blocks through the web width detection component.

[0056] P32: If the second distance is not equal to the target distance, control the driving component to continue running until the second distance is equal to the target distance.

[0057] As an embodiment, manually control the steering of the driving component to achieve manual adjustment of the second distance.

[0058] Preferably, automatic adjustment of the second distance is achieved through the signal connection between the upper computer and the actuator of the driving part.

[0059] Taking the ZL29 type filter rod forming machine set as the object for testing, the results show that: applying the tow width limit adjusting device of the present application, the average time for adjusting the width limit blocks is reduced from 20.1 min to 5.9 min, and the efficiency is increased by 240%. The adjustment time and frequency are greatly reduced, and the adjustment can be carried out without opening the equipment protective cover, reducing the work intensity of the operators and maintenance personnel, and realizing functions such as monitoring and adjustment of the tow band width.

[0060] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A filament width limiting and adjusting device for a fiber opening and sizing machine, characterized in that, It is arranged on the body of the third-stage air opener of the fiber opening and sizing machine and is located between the cover plate of the third-stage air opener and the protective housing of the fiber opening and sizing machine; The tow width limiting and adjusting device includes a double-headed lead screw rotatably arranged on the body of the fiber opening and sizing machine and width limiting blocks respectively arranged at both ends of the double-headed lead screw; The two width limiting blocks are symmetrically arranged with respect to the third-stage air opener and move relative to the third-stage air opener without rotation; a driving component is arranged at one end of the double-headed lead screw, and the thread directions at both ends of the double-headed lead screw are opposite.

2. The fiber opening and sizing machine's tow width limiting and adjusting device according to claim 1, wherein, The tow width limiting and adjusting device further includes a guide rail parallel to the double-headed lead screw, and the two width limiting blocks are respectively slidably connected to the guide rail.

3. The fiber opening and sizing machine's tow width limiting and adjusting device according to claim 1, characterized in that, The driving component is a motor, and the motor is connected to the end of the double-headed lead screw through a coupling.

4. The width-limiting adjustment device for the tow of the fiber opening and sizing machine according to claim 1, characterized in that, The tow width limiting and adjusting device further includes a web width detection component, and the web width detection component is arranged above the double-headed lead screw.

5. The fiber opening and sizing machine's tow width limiting and adjusting device according to claim 4, characterized in that, The web width detection component is a grating ruler.

6. The filament width limiting and adjusting device of the fiber opening and sizing machine according to claim 4, characterized in that, The web width detection component is a vision detection assembly.

7. The fiber opening and sizing machine's tow width limiting and adjusting device according to claim 6, characterized in that, The vision detection assembly includes a host computer and a camera arranged above the double-headed lead screw, and the camera is signal-connected to the host computer.

8. The fiber opening and sizing machine's tow width limiting and adjusting device according to claim 7, characterized in that, The host computer is signal-connected to the actuator of the driving component.

9. The width-limiting adjustment device for the tow of the fiber opening and sizing machine according to claim 1, characterized in that, The double-headed lead screw is a ball screw.

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